Ceramic-metal composite electrode with hollow screen structure

By designing a hollow sieve structure ceramic-metal composite electrode, the problems of small contact area and insufficient stability of traditional electrodes were solved, realizing the efficient conversion of CO2 into carbon nanotubes, and improving the performance of the electrode and the service life of the equipment.

CN224411925UActive Publication Date: 2026-06-26FUJIAN UNIV OF TECH
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Patent Information

Application Number
CN202521299916.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-24
Publication Date
2026-06-26
Estimated Expiration
2035-06-24

AI Technical Summary

Technical Problem

Existing electrode designs suffer from problems such as small effective contact area, low ion transport efficiency, and insufficient structural stability, resulting in low electrolysis efficiency and short equipment lifespan.

Method used

A hollow sieve structure ceramic-metal composite electrode is adopted, including an alumina ceramic sieve and a stainless steel skeleton. It is designed as a porous through-structure, embedding metal electrode sheets and stainless steel gas inlet pipe to form a conductive path, ensuring uniform diffusion of CO2 gas and directional growth of carbon nanotubes in the metal region.

Benefits of technology

It significantly improves the mass transfer efficiency of CO2 and the overall performance of the electrode, realizes the efficient conversion of CO2 into carbon nanotubes, enhances the stability of the electrode and the morphological consistency of the product, and meets the requirements of industrial controllability.

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Abstract

The utility model relates to a ceramic-metal composite electrode with a hollow screen structure. The ceramic-metal composite electrode comprises a screen, a stainless steel framework and a stainless steel air inlet pipe, a plurality of grooves which are arranged at intervals in the circumferential direction are formed in the outer cylindrical surface of the screen, and a metal electrode plate is embedded in each groove; screen air holes are evenly distributed in the column wall of the lower end of the screen. Air pipe air holes are evenly distributed in the pipe wall, inside the screen, of the stainless steel air inlet pipe. The stainless steel framework comprises a plurality of stainless steel metal bars which are arranged at intervals in the circumferential direction, one end of each stainless steel metal bar is fixedly connected with the corresponding metal electrode plate, and the other end of each stainless steel metal bar is fixedly connected with the pipe wall of the stainless steel air inlet pipe; and the edge of the stainless steel framework is fixedly connected with a conductive rod. The electrode system disclosed by the utility model can realize efficient in-situ conversion of CO2 in a high-temperature molten salt environment, the morphology consistency and crystallinity of a product carbon nanotube are obviously superior to those of a traditional process, and a controllable and stable technical path is provided for large-scale preparation of high-performance carbon materials.
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